<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0,viewport-fit=cover">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            list-style: none;
        }
    </style>
</head>
<body>
<div id="app">

</div>
</body>
</html>